topic Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C? in Video Accessories

Can I update the Adapter EF-EOS R 0.71x with a R5 C?

robetus — Mon, 07 Aug 2023 05:03:50 GMT

Can I update the Canon Mount Adapter EF-EOS R 0.71x with an R5 C camera or do I need a C70 for the update? I don't have a Canon Mount Adapter EF-EOS R 0.71x yet but I want to purchase one for my R5 C. I wanted to know if I can update the firmware before I purchase the adapter. The image attached was taken from a youtube video demonstrating updating the adapter's firmware with a C70.

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

shadowsports — Mon, 07 Aug 2023 13:14:33 GMT

Greetings ,

The 0.71x adapter is supported under firmware 1.0.5.1. the features and improvements offered in this firmware are vast and many. I recommend upgrading.

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

rs-eos — Mon, 07 Aug 2023 13:17:49 GMT

The 0.71x adapter was designed for the EOS C70. I don't see any literature about it being supported on the EOS R5 C.

From the adapter's version 1.3.0 Firmware notes, it states "It is also necessary to update the firmware of the camera body of the EOS C70."

Maybe the R5 C will be supported in the future? If so, I would assume that it would need to be set up to use a Super35 crop of the sensor.

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

shadowsports — Mon, 07 Aug 2023 13:59:25 GMT

Greetings,

Here is the info guys 🙂 I have not tested as I do not have the adapter and do not shoot in Super35 or 16. I took this to mean it's now supported. Note, to upgrade the adapter's FW, you will need to be in Photo mode on the camera. To upgrade the R5 C's FW you will be in Cinema mode. **Use an SD card for both.

Installation Instructions
Firmware Version 1.0.5.1 incorporates the following enhancements:
1. The following features are enabled when the following lenses are attached: CN-E14-35mm T1.7 L S, CN-E20-50mm T2.4 L F, CN-E45-135mm T2.4 L F, CN8x15 IAS S/E1,:
- Displaying metadata, such as the model name and the focal distance of the lens attached.
- Displaying T number.
- Support for Peripheral Illumination Correction and Chromatic Lens Aberration Correction.
- Support for Dual Pixel CMOS AF autofocus(CN8x15 IAS S/E1 only)
- Support for [Dual Pixel Focus Guide].
2. The following features are enabled when the following lenses are attached: RF-S18-45mm F4.5-6.3 IS STM, RF-S18-150mm F3.5-6.3 IS STM:
- Adds a menu to switch lens functions. (Focus Ring, Control Ring, Lens Optical Image Stabilization)
3. Adds EF lenses compatible with EF-EOS R 0.71x Mount Adapter.
CN-E14mm T3.1 L F
CN-E20mm T1.5 L F
CN-E24mm T1.5 L F
CN-E35mm T1.5 L F
CN-E50mm T1.3 L F
CN-E85mm T1.3 L F
CN-E135mm T2.2 L F
EF14mm f/2.8L II USM
EF24mm f/1.4L II USM
EF35mm f/1.4L II USM
EF50mm f/1.2L USM
EF85mm f/1.2L II USM
EF135mm f/2L　USM
4. Enables left/right switching with one touch when using Magnify. (When recording 8K RAW with VR lens attached.)
5. Enables magnify during 8K MP4 recording. (Not available when HDMI 4K is output.)
6. Improves switching time between Video/Photo mode.
7. Adds Power Saving Mode.
8. Enhances Clear Scan resolution.
9. Adds Digital-Teleconverter function. (1.5x /2x /2.5x /3x)
10. Enables to change WFM size.
11. Enables to change Vector scope gain by touch.
12. Enables to change WFM/Vector scope opacity.
13. Improves AF performance.
- Enables tracking frame to change variably depending on subject.
- Enables to detect heads facing sideways or backwards, or in situations such as when wearing a helmet.
- Enables to select Face via control ring/dial.
14. Adds [Subject Selection] assignable function via control ring/dial.
15. Adds [Canon 709 / BT.709] to the Gamma/Color Space in Custom Picture setting.
16. Adds [CMT 709] in Proxy Rec Color Conversion.
17. Adds [CMT 709] in View Assist.
18. Adds [G Gain] in White Balance in Custom Picture settings.
19. Adds support for 4CH display in audio meter.
20. Fixes an issue in which the camera is unable to shoot properly under certain conditions in still image mode after having updated the camera firmware to Version 1.0.4.1.

* 1-19 are the changes in Version 1.0.4.1, and 20 is the addition in Version 1.0.5.1.

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

robetus — Mon, 07 Aug 2023 18:53:58 GMT

Yes the advantages of speed boosting the cropped sensor on the R5 C is a reduced rolling shutter effect, 1 extra stop of light, and the ability to shoot RAW 12bit in 5.9k with a near full frame sensor. Guess I'll have to get an adapter to confirm it. I always update my cameras to the latest FW I'm on 1.0.5.1 now. Thank you for your replies, I was hoping someone had already done this that wanted to answer.

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

imranqu — Fri, 05 Jan 2024 00:19:25 GMT

Hi Robetus, did you ever use the r5c with the reducer? did it work?

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

robetus — Fri, 05 Jan 2024 06:41:13 GMT

The speed reducer will for sure work but I never got it to try and update the firmware with the r5c.

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

AtticusLake — Fri, 05 Jan 2024 10:09:33 GMT

The 0.71x adapter (like Speedboosters etc.) shrinks the image from a full-frame lens down to an APS-C sensor. Since the R5C has a full frame sensor, this combination seems like a really bad idea. Best case the R5C goes into crop mode, and the 45 megapixel camera you paid for is now a 17 megapixel camera. Worst case, it just doesn't work.

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

AtticusLake — Fri, 05 Jan 2024 10:11:03 GMT

OK, if you're happy with the very drastic loss of resolution, then I guess this could make sense.

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

imranqu — Fri, 05 Jan 2024 10:41:32 GMT

For 8K video I'm not bothered about a resolution crop as there's way more than needed for most scenarios - this is for a specialised shot with a probe lens which is usually t14 so having the speedbooster on the r5c helps give you an extra stop of light to work with - with the dual based iso of 3200 you get 2 extra stops than if you were to shoot at 800iso (most common base iso for most cinema cameras) - basically making a t14 lens nearer to a T5.6 in terms of light level which means less lights needed on set - for specialised purposes it sounds like a good idea

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

AtticusLake — Fri, 05 Jan 2024 13:50:45 GMT

OK, you've clearly thought this through, and you certainly have a more specialised use case than normal. Just bear in mind that an 8k resolution is NOT 8k pixels; it's 8k photosites. With oversampling, you can get something like a true 4k pixel resolution out of the camera. But with the APS-C crop, I don't know how that works -- I don't know what the downscaling would look like, as the camera has several different modes.

I actually tested the R5C for resolution in a bunch of different scenarios: https://moonblink.info/MudLake/gear#R5C @ 16:22

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

robetus — Fri, 05 Jan 2024 21:03:32 GMT

Resolutions don't matter, the worlds most advance digital video/cinema camera the ARRI ALEXA 35 shoots in 4.6k.

Re: Can I update the Adapter EF-EOS R 0.71x with a R5 C?

imranqu — Sun, 07 Jan 2024 12:23:29 GMT

Thank you for the info!